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A201444 Number of n X n 0..3 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other 0
4, 2, 52, 112, 4544, 16334, 1129682, 5464208, 458459214, 2605975384, 253569083138, 1617730690396 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A201451

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=6

..0..0..0..0..0..1....0..0..0..0..1..1....0..0..0..1..2..2....0..0..0..0..1..1

..0..0..1..2..2..2....0..0..0..0..1..1....0..0..1..1..2..3....0..0..0..0..2..2

..0..0..1..2..3..3....0..1..1..1..1..1....0..1..1..2..2..3....0..1..1..1..2..2

..1..1..2..2..3..3....2..2..2..2..2..3....0..1..1..2..2..3....1..1..2..2..2..2

..1..1..2..2..3..3....2..2..2..3..3..3....0..1..1..2..2..3....1..1..2..3..3..3

..1..1..2..3..3..3....2..3..3..3..3..3....0..3..3..3..3..3....3..3..3..3..3..3

CROSSREFS

Sequence in context: A107667 A163176 A277306 * A236381 A335300 A201228

Adjacent sequences:  A201441 A201442 A201443 * A201445 A201446 A201447

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 01 2011

STATUS

approved

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Last modified May 24 17:23 EDT 2022. Contains 354042 sequences. (Running on oeis4.)